[Footnote 4: Chryst., Genes., serm. v. i.; Ep. ad Cor., hom. xix. 4.]
[Footnote 5: De Civ. Dei, xix. 14-15.]
[Footnote 6: Ibid.]
Janet ably analyses and expounds the advance which St. Augustine made in the treatment of slavery: 'In this theory we must note the following points: (1) Slavery is unjust according to the law of nature. This is what is contrary to the teaching of Aristotle, but conformable to that of the Stoics. (2) Slavery is just as a consequence of sin. This is the new principle peculiar to St. Augustine. He has found a principle of slavery, which is neither natural inequality, nor war, nor agreement, but sin. Slavery is no more a transitory fact which we accept provisionally, so as not to precipitate a social revolution: it is an institution which has become natural as a result of the corruption of our nature. (3) It must not be said that slavery, resulting from sin, is destroyed by Christ who destroyed sin…. Slavery, according to St. Augustine, must last as long as society.'[1]
[Footnote 1: Janet, op. cit., p. 302.]
Nowhere does St. Thomas Aquinas appear as clearly as the medium of contact and reconciliation between the Fathers of the Church and the ancient philosophers as in his treatment of the question of slavery. His utterances upon this subject are scattered through many portions of his work, but, taken together, they show that he was quite prepared to admit the legitimacy of the institution, not alone on the grounds put forward by St. Augustine, but also on those suggested by Aristotle and the Roman jurists.
He fully adopts the Augustinian argument in the Summa, where, in answer to the query, whether in the state of innocence all men were equal, he states that even in that state there would still have been inequalities of sex, knowledge, justice, etc. The only inequalities which would not have been present were those arising from sin; but the only inequality arising from sin was slavery.[1] 'By the words "So long as we are without sin we are equal," Gregory means to exclude such inequality as exists between virtue and vice; the result of which is that some are placed in subjection to others as a penalty.'[2] In the following article St. Thomas distinguishes between political and despotic subordination, and shows that the former might have existed in a state of innocence. 'Mastership has a twofold meaning; first as opposed to servitude, in which case a master means one to whom another is subject as a slave. In another sense mastership is commonly referred to any kind of subject; and in that sense even he who has the office of governing and directing free men can be called a master. In the first meaning of mastership man would not have been ruled by man in the state of innocence; but in the latter sense man would be ruled over by man in that state.'[3] In De Regimine Principum Aquinas also accepts what we may call the Augustinian view of slavery. 'But whether the dominion of man over man is according to the law of nature, or is permitted or provided by God may be certainly resolved. If we speak of dominion by means of servile subjection, this was introduced because of sin. But if we speak of dominion in so far as it relates to the function of advising and directing, it may in this sense be said to be natural.'[4]
[Footnote 1: i. 96, 3.]
[Footnote 2: Ibid., ad. 1.]
[Footnote 3: i. 96, 4.]